YTA Series Temperature Catalog

Temperature is the most vital process variable, accept nothing less than…

• Safety• Precision• Versatility

Temperature solutions

Subject to change without noticeAll Rights Reserved. Copyright © 2009, Yokogawa Electric Corporation

www.yokogawa.com

Bulletin 01C50A01-01EN

YOKOGAWA ELECTRIC CORPORATIONWorld Headquarters9-32, Nakacho 2-chome, Musashino-shi, Tokyo 180-8750, JAPANhttp://www.yokogawa.com/

YOKOGAWA CORPORATION OF AMERICA2 Dart Road, Newnan, Georgia 30265, USAhttp://www.yokogawa.com/us/

YOKOGAWA EUROPE B.V. Euroweg 2, 3825 HD Amersfoort, THE NETHERLANDShttp://www.yokogawa.com/eu/

YOKOGAWA ENGINEERING ASIA PTE. LTD.5 Bedok South Road, Singapore 469270, SINGAPOREhttp://www.yokogawa.com/sg/

YOKOGAWA CHINA CO., LTD.3F TowerD Cartelo Crocodile BuildingNo.568 West Tianshan Road, Shanghai 200335, CHINAhttp://www.yokogawa.com/cn/

YOKOGAWA MIDDLE EAST B.S.C.(c)P.O. Box 10070, ManamaBuilding 577, Road 2516, Busaiteen 225, Muharraq, BAHRAINhttp://www.yokogawa.com/bh/

TrademarksAll brand or product names of Yokogawa Electric Corporation in this bulletin are trademarks or registered trademarks of Yokogawa ElectricCorporation. All other company brand or product names in this bulletin are trademarks or registered trademarks of their respective holders.

Printed in Japan,212(KP) [Ed : 04/C]

Accuracy

Stability

Robustness

Stability

RobustnessYTA series enables advanced linearization of 17 types of industrial temperature sensors and input signals such as mV or Ohms (Ω).Utilizing a selected high grade 16bit A/D converter allows YTA to achieve a best in class performance of 0.02% of span or ±0.1°C.

YTA’s stability is inherited from its meticulous product design and development philosophy. Containing a precision internal reference, YTA can detect and automatically correct for any instability, delivering a 5 year stability guarantee.

Robust dual compartment housing with hermetically sealed terminals ensure a long service life, even in the harshest of industrial environments. The durable epoxy paint maximizes chemical resistance, for maximum protection in marine environments where salt spray and semi immersion are common a stainless housing is available.

The quali ty that you’ve come to expect.

Te m p e r a t u r e s o l u t i o n s

Accuracy

2 3

R

Real RTD curve

T

YTA’s large informative indicator clearly displays the current status and process information at a glance. A 32 segment circular bargraph provides a clear graphical feedback of the process measurement, while the measurement value itself is displayed in the center along with the correct measurement units. Below the measurement value a dot matrix area keeps you updated with diagnostic information, such as measurement and alarm status etc…

The linear curve which is assumed to relate temperature andresistance for RTD’s, causes minor errors in the final temperature measurement. For the highest accuracy temperature measurement,the specific RTD characteristics described by the Calendar Van Dusen coefficients are programmed into our YTA temperature transmitter.

Easier installation, commissioning and operation, universal inputskeeps inventory costs low while allowing our YTA series to fulfilla wide range of options, which means you can specify a YTAseries transmitter to suit virtually all applications.From field mounted to head mounted (Hockey puck), failed sensorbackup or differential temperature measurements, there is a YTAtemperature transmitter to suit your requirements.

Easy Installation

YTA has an automatic failed sensor backup function that transfers seamlessly to the standby sensor when needed. When the primary sensor fails, the transmitter will automatically switch over to the standby, secondary sensor. An error message is displayed on the local indicator and an alarm message is generated for the host system and asset manager.

The failed sensor can then be replaced without losing vital process information. This allows the sensor to be replaced at the next convenient maintenance period, avoiding unnecessary trips to the field and a possible unscheduled plant shutdown.

Failed Sensor Backup

Sensor Matching

YTA’s dual-compartment housing isolates the field wiring terminals from the electronics, enabling high resistance to harsh environments.

Reliability and durability are guaranteed with NEMA 4X and IP67 compliance. The dual-compartment housing protects the electronics from moisture ingress and eliminates the need to expose the electronics to the environment. This ensures a long service lifeand stability, while reducing maintenance and cost of ownership.

Dual Compartment,NEMA 4X IP 67 housing

Clear informative Indicator

＆YTA110 & YTA320 YTA320

Standard curve

CONTROL SAFETY

4 5

The YTA70 delivers all the benefits found in the YTA50 while adding the industrial standard communications protocol HART (Highway Addressable Remote Transducer). The HART protocol allows you to conveniently configure the transmitter using the latest FDT/DTM technology. YTA70 accepts 17 different signal inputs, such as Thermocouples, RTD, Ohms ora DC millivolts source and additionally enables custom sensors using a configurable matrix. A standard linearized industrial 4 to 20mA DC output for transmission to a control system is provided. YTA70is the optimum choice for all your control applications.

YTA70The YTA50 is a PC programmable head mounted temperature transmitter with a single universal input. The universal input accepts Thermocouples, RTD, Ohms or a DC millivolts source. All inputs are linearized and converted in to an industrial standard 4 to 20mA DC output for transmission to a system. YTA50 is the optimum choice for all your monitoring applications.

YTA50

CONTROL & MONITORING

6 7

Temperature Sensors

ThermowellsSensor rangeabilityThermowells are an important part of the temperature measurement and the plant’s containment solution, providing protection against potentially dangerous process mediums.

A correctly designed thermowell can withstand;

- Erosion - Corrosion- High pressures and velocities- Various mechanical stressors

Quality of design and manufacturing is essential to meet the requirements of a variety of process environments.

Thermowells can be manufactured from barstock, forgings or tubular construction and in a variety of materials ranging from stainless steel to exotic alloys. These ensure mechanical integrity, safety and longevity.

A welded flanged thermowell can be an acceptable solution for many applications, however, a full penetration welded flanged thermowell (double “J”) delivers the maximum mechanical strength for high pressure service.

Once welded and heat treated the thermowell becomes effectively a one piece construction of similar alloys. Quality assurance testing, such as; dye-penetration, X-Ray, ultrasonic and pressure testing confirm the welding process.

The ultimate thermowell is formed from a single piece of material, forging and therefore, has no welds.This is an excellent choice for high pressure, arduous process.

An assortment of temperature sensors are readily available, these include Resistance Temperature Detectors (RTD’s) and Thermocouples (TC’s) to suit all process automation applications. Wire wound RTD’s represent the most common temperature sensors, because of their inherent accuracy and stability, they are used extensively in process measurement and control.

Thermocouples deliver high temperature capability and are more vibration tolerant than RTD’s. Furthermore, they can be manufactured in small diameters for asset monitoring purposes. The quality of the sensor remains essential to the overall health of your process and plant.

type J type K typeT type R pt100

2500

2000

1500

1000

500

-500

32

1400

1100

815

540

260

-296

0

FC

+

-T C

RTD

Insulation material

3 wire

type E

4 wire

rmowellsThe

8 9

sorsSen

Safety

In today’s highly regulated production environment, compliance with the latest safety standards and regulationsis mandatory.

Plant safety and the safety of personnel are equally as important today as plant availability, throughput and increased profitability. For these reasons Yokogawa believes safety should not be an option, it should bestandard in all modern process automation & control equipment. Our strategy is to continue to build the finesthigh quality, reliable, industrial automation & control solutions and incorporate the latest safety standards suchas IEC61508 in their design.YTA has been designed and built in accordance with this new philosophy. This iswhy YTA is such an important part of our Safety Excellence Suite of Total Safety Solutions.

Whether or not YTA is installed in a Safety Instrument Functtion (SIF) it will deliver a lifetime of benefits, one of which being high integrity process measurements validated by onboard safety diagnostic functions.

With YTA, you no longer have to sacrifice plant availability for plant safety. YTA allows you to maximize your plant’s safe availability while optimizing operational uptime.

We believe in investing in our customer’s future as a means to securing our own future, investing more than 8% of corporate revenues in R&D. At the forefront of industrial automation technology, designing and development new sensors and automation platforms while enhancing existing solutions with safety (IEC61508) and advanced process diagnostics.

From conception through to design and development and eventual sales release we follow a meticulous design process that ensures the highest possible final product quality. Every product is subject to continuous testing and inspection to guarantee the final product quality and integrity.

“Do you regard safety as an option? No?…….. Neither do we!”

SIL

4

3

2

1PFD: Probability of Failure on DemandRRF: Risk Reduction Factor (RRF=1/PFD)

PFDavg

>=10-5 to <10-4

>=10-4 to <10-3

>=10-3 to <10-2

>=10-2 to <10-1

RRF

>10,000 to < 100,000

>1,000 to <10,000

>100 to <1,000

>10 to <100

Design

ProductionProcess

“Quality First” is a no compromise founding principle of Yokogawa embedded throughout our operationsand processes worldwide. Quality requires more than procedures and standards,it requires a quality minded culture to thrive and this is realised through the knowledge,skills and experience of our people.

Quality requires a continuous introspective process of refinement and improvement.This fits perfectly with Japanese culture where the concept that “Nothing is permanent, perfect and lasts forever.”drives the quest for the highest possible quality. Forever vigilant,constantly striving to improve the complete product life cycle, including; design,manufacturing, logistics and after sales support. We believe that customer satisfaction is derived directly from quality.

That’s why at Yokogawa, “Quality First” philosophy is the responsibility of everyone,from R&D through to final production; from the line operator to the managing director.

Quality

10 11

Temperature is the most vital process variable, accept nothing less than…

• Safety• Precision• Versatility

Temperature solutions

Subject to change without noticeAll Rights Reserved. Copyright © 2009, Yokogawa Electric Corporation

www.yokogawa.com

Bulletin 01C50A01-01EN

YOKOGAWA ELECTRIC CORPORATIONWorld Headquarters9-32, Nakacho 2-chome, Musashino-shi, Tokyo 180-8750, JAPANhttp://www.yokogawa.com/

YOKOGAWA CORPORATION OF AMERICA2 Dart Road, Newnan, Georgia 30265, USAhttp://www.yokogawa.com/us/

YOKOGAWA EUROPE B.V. Euroweg 2, 3825 HD Amersfoort, THE NETHERLANDShttp://www.yokogawa.com/eu/

YOKOGAWA ENGINEERING ASIA PTE. LTD.5 Bedok South Road, Singapore 469270, SINGAPOREhttp://www.yokogawa.com/sg/

YOKOGAWA CHINA CO., LTD.3F TowerD Cartelo Crocodile BuildingNo.568 West Tianshan Road, Shanghai 200335, CHINAhttp://www.yokogawa.com/cn/

YOKOGAWA MIDDLE EAST B.S.C.(c)P.O. Box 10070, ManamaBuilding 577, Road 2516, Busaiteen 225, Muharraq, BAHRAINhttp://www.yokogawa.com/bh/

TrademarksAll brand or product names of Yokogawa Electric Corporation in this bulletin are trademarks or registered trademarks of Yokogawa ElectricCorporation. All other company brand or product names in this bulletin are trademarks or registered trademarks of their respective holders.

Printed in Japan,212(KP) [Ed : 04/C]